Use the following command to set up the stable repository. You always need the stable repository, even if you want to install builds from the edge or testing repositories as well. To add the edge or testing repository, add the word edge or testing (or both) after the word stable in the commands below.

Note: The lsb_release -cs sub-command below returns the name of your Debian distribution, such as jessie.

To also add the edge repository, add edge after stable on the last line of the command.